Research on the LiODFB Electrolyte’s Electrochemical Performance and Its Compatibility with LTO Electrode

1 mol/L LiODFB (LiPF6) EC+DMC+EMC (1:1:1 (wt%)) electrolyte’s thermal stability and corrosivity to the aluminum foil were tested by the electrochemical workstation. Cyclic voltammogram, electrochemical impedance spectroscopy rate and cycle performances of LTO/Li battery were measured. The compatibility between LiFePO4/LTO electrode and electrolyte was studied. Results show that at room temperature and 60 the stability of LiODFB electrolyte and its corrosivity to the aluminum foil are superior to that of LiPF6 electrolyte. LTO/Li cells with either LiODFB or LiPF6 for electrolyte have simple REDOX peak, and their first charge-discharge curves have stable charge-discharge platform. The difference battery performance between LiODFB and LiPF6 with LiFePO4/LTO as electrode at 0.5C and 1C rates is not significant at room temperature. LiODFB battery exhibits better cycle performance than LiPF6 battery at room temperature and especially at 60